睡眠呼吸障碍患者的肌肉反应：新的评估与测量方法

文献信息

中文摘要

背景： 阻塞性睡眠呼吸暂停（OSA）是一种异质性疾病，受解剖性塌陷性和非解剖性因素（如神经肌肉反应）的共同影响。通过简化的临床替代指标识别这些特征对于个体化精准医学至关重要。
方法： 这项探索性回顾性研究评估了207份意大利患者的家庭多导睡眠图记录，以评估睡眠阶段特异性呼吸暂停低通气指数（REM vs. NREM AHI）作为解剖性塌陷性与神经肌肉代偿之间平衡的临床替代指标。患者按严重程度分层为单纯打鼾者（AHI < 5次/小时）、轻度OSA（AHI 5-15次/小时）和重度OSA（AHI > 30次/小时）。比较REM和NREM AHI值，并将其与呼吸暂停指数（AI）、低通气指数（HI）、体重指数（BMI）以及累积夜间去饱和指数（CT < 90%和T < 90 min）进行相关性分析。
结果： 在非重度患者（单纯打鼾者和轻度OSA）中，REM AHI显著高于NREM AHI（REM/NREM比值 > 1），提示NREM睡眠期间存在相对神经肌肉保护。相反，在重度OSA患者中，REM/NREM比值逐渐降低并接近1，以NREM AHI为主。此外，NREM优势与更高的AI和更差的累积去饱和显著相关，表明整体疾病更为严重。
结论： REM AHI优势是轻度OSA表现的特征，伴有有效的NREM肌肉代偿；而NREM优势则与解剖主导的重度表型相一致。将AHI分解为REM和NREM成分提供了一种实用、易于获得的临床替代指标，用于估计解剖-神经肌肉平衡并指导PALM导向的个体化治疗。

英文摘要

BACKGROUND: Obstructive sleep apnea (OSA) is a heterogeneous disorder influenced by both anatomical collapsibility and non-anatomical factors, such as neuromuscular response. Identifying these traits through simplified clinical surrogates is crucial for personalized precision medicine.
METHODS: This exploratory retrospective study evaluated 207 home polygraphy recordings of Italian patients to assess sleep-stage-specific Apnea-Hypopnea Index (REM vs. NREM AHI) as a clinical surrogate indicator of the balance between anatomical collapsibility and neuromuscular compensation. Patients were stratified by severity into simple snorers (AHI < 5 events/h), mild OSA (AHI 5-15 events/h), and severe OSA (AHI > 30 events/h). REM and NREM AHI values were compared and correlated with Apnea Index (AI), Hypopnea Index (HI), body mass index (BMI), and cumulative nocturnal desaturation indices (CT < 90% and T < 90 min).
RESULTS: In non-severe patients (simple snorers and mild OSA), REM AHI was significantly higher than NREM AHI (REM/NREM ratio > 1), suggesting relative neuromuscular protection during NREM sleep. Conversely, in severe OSA patients, the REM/NREM ratio progressively decreased and approached unity, with NREM AHI prevailing. Furthermore, NREM predominance was significantly associated with a higher AI and a worse cumulative desaturation indicating a globally more severe disease.
CONCLUSIONS: A predominance of REM AHI characterizes milder OSA presentations with effective NREM muscular compensation, whereas NREM predominance aligns with an anatomically dominant, severe phenotype. Decomposing AHI into REM and NREM components provides a practical, readily available clinical surrogate to estimate the anatomy-neuromuscular balance and guide PALM-oriented personalized treatments.